WO2007000122A1 - Machine entrainee par un liquide - Google Patents

Machine entrainee par un liquide Download PDF

Info

Publication number
WO2007000122A1
WO2007000122A1 PCT/CZ2006/000040 CZ2006000040W WO2007000122A1 WO 2007000122 A1 WO2007000122 A1 WO 2007000122A1 CZ 2006000040 W CZ2006000040 W CZ 2006000040W WO 2007000122 A1 WO2007000122 A1 WO 2007000122A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
liquid
stator
whirling
machine according
Prior art date
Application number
PCT/CZ2006/000040
Other languages
English (en)
Inventor
Miroslav Sterba
Original Assignee
Miroslav Sterba
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miroslav Sterba filed Critical Miroslav Sterba
Publication of WO2007000122A1 publication Critical patent/WO2007000122A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/18—Non-positive-displacement machines or engines, e.g. steam turbines without stationary working-fluid guiding means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/34—Non-positive-displacement machines or engines, e.g. steam turbines characterised by non-bladed rotor, e.g. with drilled holes
    • F01D1/36—Non-positive-displacement machines or engines, e.g. steam turbines characterised by non-bladed rotor, e.g. with drilled holes using fluid friction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/18—Geometry two-dimensional patterned
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/25—Geometry three-dimensional helical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/30—Arrangement of components
    • F05B2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05B2250/312—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being parallel to each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/30—Arrangement of components
    • F05D2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05D2250/312—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being parallel to each other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Definitions

  • the invention concerns a liquid machine comprising a stator in which an elongated rotor of a rotationally symmetrical shape is installed by a rigid shaft in a turning way and between the stator and the rotor there is a coaxial channel that has the shape of a diffuser in at least a part of its length and the stator is equipped with at least one tangentially connected liquid inlet and at least one liquid outlet while the liquid outlet is positioned in a distance from the liquid inlet in the direction of the rotor axis
  • Liquid machines consisting of a stator in which a rotor with blades is installed in a turning way are commonly known from the state of the art.
  • the driving medium may be gas or liquid or their mixture.
  • the driving medium flows through the stator and turns the rotor by applying its force on the blades of the rotor.
  • bladeless liquid machines are known.
  • author's certificate no. 941 665 of the former USSR describes a hydro-motor which consists of a rectification channel in which a confusor is arranged.
  • a ball-shaped rotor is installed on a shaft. The rotor is connected to a starting motor.
  • the starting motor is first used to rotate the shaft and the ball rotor.
  • the flow of liquid that passes around the ball in the confusor from all sides is set in motion this way.
  • the flow of liquid rotating in the confusor then maintains rotation of the ball rotor as a result of friction between the liquid and the surface of the ball rotor.
  • a disadvantage of this design is that the rotor cannot be set in motion without an auxiliary starting motor.
  • the Czech patent no. 295305 called "Bladeless liquid machine” and the international application no. PCT/CZ2005/000029, the disclosure of which is incorporated by reference, deals with a liquid machine comprising a stator in which a bladeless rotor of a rotationally symmetrical shape is installed and between the stator and the rotor there is a coaxial channel.
  • the stator is equipped with at least one liquid inlet and at least one liquid outlet while the liquid outlet is positioned in a distance from the liquid inlet in the direction of the axis of the bladeless rotor.
  • the liquid inlet is connected tangentially to the stator and the coaxial channel has the shape of a diffuser in at least a part of its length.
  • a liquid machine designed this way does not need any auxiliary starting drive and in spite of this the rotor can be mounted in a simple way.
  • measurements have shown that in some regimes the laminar flow on the rotor surface, and consequently the boundary- layer which transfers kinetic energy from the working medium onto the rotor may get detached, which results in decreased performance of the liquid machine.
  • the aim of this technical design is to modify the structure of the liquid machine based on the Czech patent no. 295305 and the international application no. PCT/CZ2005/000029 in such a way as to prevent boundary-layer separation on the rotor surface. Disclosure of Invention
  • a liquid machine comprising a stator in which an elongated rotor of a rotationally symmetrical shape is installed by a rigid shaft in a turning way and between the stator and the rotor there is a coaxial channel that has the shape of a diffuser in at least a part of its length and the stator is equipped with at least one tangentially connected liquid inlet and at least one liquid outlet while the liquid outlet is positioned in a distance from the liquid inlet in the direction of the rotor axis.
  • the stator is equipped with whirling surfaces.
  • the advantage of a liquid machine based on this invention is that the applied whirling surfaces prevent boundary-layer separation and this way they improve transfer of energy between the liquid and the rotor.
  • the whirling surfaces stabilise flow in the coaxial channel with the diffuser shape, which has a positive impact on efficiency of the machine.
  • the smooth part of the rotor fulfils the function of a liquid distributor at the same time.
  • the whirling surfaces comprise of protrusions arranged along the perimeter of the rotor with certain intervals after each other.
  • the protrusion can be arranged both transversally with regard to the rotor shaft and substantially in parallel with the rotor shaft.
  • the whirling surfaces comprise of a helix arranged on the rotor surface.
  • the whirling surfaces may also comprise of a blade wheel installed on the rotor surfaces and/or a separate blade wheel installed behind the rotor.
  • the separate blade wheel may be advantageously installed in an axially adjustable position on the common shaft with the rotor.
  • Fig. 1 and 2 present whirling surfaces comprising of protrusions arranged transversally to the rotor axis.
  • Fig. 3 shows protrusions arranged substantially in parallel to the rotor axis.
  • Fig. 4 there are whirling surfaces with the shape of a helix while in Fig. 5 the whirling surfaces have the shape of protrusions on the rotor front.
  • Fig. 6, 7 and 8 show whirling surfaces in the form of various designs of blade wheels.
  • the liquid machines have the same basic design and they are only differentiated by the design of the whirling surfaces 10. All the presented versions have a stator 1 whose inner diameter gets narrower in the liquid flow direction.
  • an elongated rotor 2 of a rotationally symmetrical shape is mounted on a rigid shaft 3. With the exception of the whirling surfaces .10 described below the surface of the rotor 2 is smooth.
  • the shaft 3 is mounted in both ends of the stator 1 in moving devices 9 allowing to adjust the position of the rotor 2 in the stator X.
  • the moving devices 9 at the same time fulfil the function of turning bearing mounting of the shaft 3.
  • any known mechanism can be used. For the design of moving device 9 no protection is sought and this is why it is not described in a detailed way.
  • the rotor 2 does not only have to have the shape of a truncated cone as shown in the sample versions in Figs. 1 to 8. The only condition is that the rotor shape must be rotationally symmetrical.
  • the term "rotor of a rotationally symmetrical shape" means for the purposes of this invetion an elongated body whose axis of rotation is its axis of symmetry at the same time, i.e. on all planes passing through the axis of symmetry the section of the rotor always has the same shape.
  • the forming curve whose rotation determines the shape of the outer surface of the rotor can in fact have any shape.
  • stator 1 - rotor 2 assembly must always be shaped in such a way that the coaxial channel 7 can form a diffuser in at least a part of its length.
  • the stator 1 is equipped with a tangentially connected liquid inlet 8 at one end and a liquid outlet 5 at the other end. It is obvious that there may be several liquid inlets 8 as well as liquid outlets 5. In the basic version shown in Figs. 1 to 8 there is one liquid inlet 8 comprising of a tangentially connected nozzle (not shown) while there are several liquid outlets 5.
  • the rotor 2 with the shape of a truncated cone is installed in the stator 1 in such a way that the biggest diameter of the rotor 2 is at the side of the liquid inlet 8 and the smallest diameter of the rotor 2 is at the side of the liquid outlet 5.
  • whirling surfaces 10 in the form of protrusions H positioned in certain intervals after each other are arranged transversally to the axis of the shaft 3 of the rotor 2.
  • the whirling surfaces 10 are only provided in one place of the otherwise smooth surface of the elongated rotor 2.
  • the protrusions H have a constant thickness, but in the version presented in Fig. 2 the protrusions H may also have another shape, e.g. the displayed shape of a wedge widening or narrowing in the spiral flow direction in the stator 1.
  • the whirling surfaces 10 also have the shape of protrusions H arranged in intervals after each other along the perimeter of the rotor 2, but as Fig. 3 makes clear, the protrusions are actually arranged in parallel with the shaft 3 of the rotor 2.
  • the whirling surfaces 10 form a continuous helix 12 with variable elevation where at the side of the bigger diameter of the rotor 2 the distances between the peaks of the helix 12 are the highest and at the opposite side they are the lowest.
  • Fig. 5 presents a sample version of the liquid machine whose whirling surfaces 10 have the shape of elongated protrusions H with a constant thickness that are positioned on the front surface of the rotor 2 in a radial way.
  • the whirling surfaces JK) in the version shown in Fig. 6 have the form of a blade wheel 4 positioned in one place of the otherwise smooth surface of the rotor 2.
  • the whirling surfaces 10 in the version shown in Fig. 7 have the form of a separate blade wheel 6 positioned behind the rotor 2 from the point of view of liquid flow through the stator ⁇ .
  • the separate blade wheel 6 may be equipped with a moving device 9 designed to adjust the position of the blade wheel 6 on the shaft 3.
  • the separate blade wheel 6 may rotate independently of the rotation of the rotor 2L
  • Fig. 8 shows a combination of versions presented in Fig. 6 and 7.
  • the whirling surfaces 10 comprise of both a blade wheel 4 positioned in one place of the otherwise smooth surface of the rotor 2 and a separated blade wheel 6 installed behind the rotor 2.
  • the whirling surfaces IiO based on this invention stabilise the laminar flow on the surface of the rotor 2 and prevent boundary-layer separation, which improves the performance. This is also supported by the combination of the whirling surfaces 10 with the smooth part of the rotor 2, which fulfils the function of a distributor.
  • the stator 1 had the biggest inner diameter of 50 mm and the smallest inner diameter of 31 mm.
  • Rotor 2_with the shape of a truncated cone had the biggest diameter of 48 mm, the smallest diameter of 20 mm and the length of 84 mm.
  • the medium used was pressurised air from a pressure vessel in which the pressure was maintained in the range between 230 and 290 kPa.
  • the speed of the rotor 2 between 3870 and 4960 rpm was achieved and the performance in the range of 115 to 185 W.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention porte sur une machine entraînée par un liquide comportant un stator (1) dans lequel tourne un rotor allongé (2) de forme symétrique tournant autour d'un axe rigide (3). Entre le stator (1) et le rotor (2) se trouve un canal coaxial (7) en forme de diffuseur sur au moins une partie de sa longueur. Le stator (1) comporte au moins une entrée (8) tangentielle de liquide et au moins une sortie (5) de liquide distante de l'entrée (8) de liquide dans le sens de l'axe du rotor (8). Le stator (1) comporte des surfaces génératrices d'écoulements tourbillonnaires.
PCT/CZ2006/000040 2005-06-27 2006-06-13 Machine entrainee par un liquide WO2007000122A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ200516773U CZ15756U1 (cs) 2005-06-27 2005-06-27 Tekutinový stroj
CZPUV2005-16773 2005-06-27

Publications (1)

Publication Number Publication Date
WO2007000122A1 true WO2007000122A1 (fr) 2007-01-04

Family

ID=35071106

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2006/000040 WO2007000122A1 (fr) 2005-06-27 2006-06-13 Machine entrainee par un liquide

Country Status (2)

Country Link
CZ (1) CZ15756U1 (fr)
WO (1) WO2007000122A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015076851A1 (fr) * 2013-11-25 2015-05-28 Halliburton Energy Services, Inc. Convertisseur d'énergie mécanique à fluide en nutation
US9657519B2 (en) 2014-01-30 2017-05-23 Halliburton Energy Services, Inc. Nutating fluid-mechanical energy converter to power wellbore drilling

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US877848A (en) * 1907-09-13 1908-01-28 Benjamin Edwin Lewis Fluid-pressure turbine.
FR542461A (fr) * 1921-10-18 1922-08-12 Rotor universel à aubes hélicoïdales
US3157793A (en) * 1961-07-31 1964-11-17 Curtiss Wright Corp Turbo-alternator generator
US3490851A (en) * 1967-09-29 1970-01-20 Edward Krzyszczuk Circular flow air compressor or diffusion motor
US4500254A (en) * 1982-11-08 1985-02-19 Rozniecki Edward J Gas expansion motor
GB2226081A (en) * 1988-12-14 1990-06-20 Rolls Royce Plc Fluid friction pump or turbine
WO2005106205A1 (fr) * 2004-04-28 2005-11-10 Miroslav Sterba Machine fluidique exempte de pale

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US877848A (en) * 1907-09-13 1908-01-28 Benjamin Edwin Lewis Fluid-pressure turbine.
FR542461A (fr) * 1921-10-18 1922-08-12 Rotor universel à aubes hélicoïdales
US3157793A (en) * 1961-07-31 1964-11-17 Curtiss Wright Corp Turbo-alternator generator
US3490851A (en) * 1967-09-29 1970-01-20 Edward Krzyszczuk Circular flow air compressor or diffusion motor
US4500254A (en) * 1982-11-08 1985-02-19 Rozniecki Edward J Gas expansion motor
GB2226081A (en) * 1988-12-14 1990-06-20 Rolls Royce Plc Fluid friction pump or turbine
WO2005106205A1 (fr) * 2004-04-28 2005-11-10 Miroslav Sterba Machine fluidique exempte de pale

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015076851A1 (fr) * 2013-11-25 2015-05-28 Halliburton Energy Services, Inc. Convertisseur d'énergie mécanique à fluide en nutation
US9309862B2 (en) 2013-11-25 2016-04-12 Halliburton Energy Services, Inc. Nutating fluid-mechanical energy converter
GB2534739A (en) * 2013-11-25 2016-08-03 Halliburton Energy Services Inc Nutating fluid-mechanical energy converter
GB2534739B (en) * 2013-11-25 2020-04-01 Halliburton Energy Services Inc Nutating fluid-mechanical energy converter
US9657519B2 (en) 2014-01-30 2017-05-23 Halliburton Energy Services, Inc. Nutating fluid-mechanical energy converter to power wellbore drilling

Also Published As

Publication number Publication date
CZ15756U1 (cs) 2005-08-29

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